If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Move three sticks of the spiral below to form a square.

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

What number comes next in the series?

5 15 5 18 5 24 14 20 _

What does this below rebus puzzle mean?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?